Boring or drilling machine



(No Model.) 2 Sheets- Sheet 2.

w. s. SHERMAN. BORING 0R DRILLING MACHINE.

Patented May 16, 1893.

Egj qr I iuia wwwwaw G UNITED STATES PATENT OFFICE.

WVILLIS S. SHERMAN, OF HERMANSVILLE, MICHIGAN.

BORING OR DRILLING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 497,434, dated May 16,1893.

Application filed July 23, 1892. Serial No. 441,053. (No model.)

T0 or whom it may concern:

Be it known that I, WILLIs'S. SHERMAN, a citizen of the United States,residing at Hermansville, in the county of Menominee,State of Michigan,have invented certain new and useful Improvements in Boring or DrillingMachines, of which the following is aspecification, reference being hadtherein to the accompanying drawings.

This invention relates to certain new and useful improvementsin boringor drilling machines and it has for its object among others to provide asimple and efficient machine for boring or drilling holes in flooring,ceiling or other like material, for the passage of the nails.

It has for a further object the provision of a suitable In echanism forthis purpose which may be readily attached to a planer or matcher ofordinary construction, or which may be made an independent machine bysimply providing suitable feed rolls and guides. The head carrying theboring tools is mounted for revolution and also for slight movement inthe arc of a circle, the support being yieldingly supported so that ifthere should be any unevenness in the material being operated upon thedrill head will automatically conform thereto. The boring tool and theother parts are so arranged that the tool will work in the angle formedby the upper face of the tongue of the board and the side face thereofso that the hole will be so formed and located that the nail when drivenwill be hidden from view by the next adjacent board. I provide acontinuous feed and a rotary drill head with a plurality of boringtools, the tools being so spaced around the head as to form the holes atthe required distance apart.

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification,and in which Figure 1 is an end elevation of myimprovements attached to a planer or matcher ready for operation. Fig. 2is a longitudinal section through the box of the drill-head shaft. Fig.

3 is a front face view of the drill head, on an enlarged scale,with thecovering plate broken away. Fig. 4 is a central cross section throughthe drill head, on the same scale as Fig. 3, showing the interiorgearing, drills and spindles.

Like letters of reference indicate like parts throughout the severalviews. v

Referring now to the details of the drawings by letter, A designates aportion of a planer or matcher of known construction, of which a is. theusual guide A is the feed roll and a the presser roll. It is not deemednecessary to illustrate more of the planer or matcher as those partsshown are sufficient for a proper understanding of my invention. Adesignates a board being operated upon and a is the tongue thereof, theboring tool being arranged to work in the angle formed by the upper faceof the said tongue and the side face of the board above the tongue asseen in Fig. 1.

My improvement may be supported in juxtaposition to the planer ormatcher in any suit- Rising from this base are the lugs or ears Bbetween which the angle arm 0 which carries the drill head is pivoted ona pivot 12 This angle arm has a lateral extension 0 against the underside of which a spring-G exerts its influence as seen in Fig. 1, thespring being secured at one end to the base, and c is a bolt providedwith nuts 0 for limiting the movement of the lateral portion of the armand for holding the same. inits adjusted position and keeping the head Gfrom dropping afterthe board A passes from thehead. This pivotalmovement together with the spring exerting itself upon the under side ofthe extension of the arm permits of automatic movement of the drill headto any unevenness or variations in the board being operated upon. Thearm 0 has bearings or boxes 0 for the shaft 1) of the drill head, andfor the journal extension G of the head G, which in turn forms onebearing for the shaft D, and D is a removable and adjustable cap,suitable holding and adjusting means (I being provided as seen in Fig.1.

To the shaft or spindleD between the boxes or bearings is secured thebelt pulley E as by a set screw e, see Fig. 2, and motion is given thispulley by belt, not shown, from any suitable source of power.

On the outer end of the shaft or spindle D is a gear F which is arrangedwithin the drill head, which consists of two parts G and G detaehablyconnected together as by a screw g, the part G having a central hub gand man holes G covered by a detachable covering plate II so as toprovide access to the internal gearing now to be described. The drillhead has a circumferential V-shaped rib to fit the angle in the board asseen best in Fig. 1. The covering plate is secured by a centralremovable bolt 7b to the hub of the part G as seen best in Fig. 4.

The head may be made of any required size and have the desired number ofdrills orboring tools so that the holes will be made the requireddistance apart.

I are spindles journaled within the head and carrying at their outerends the pinions I which mesh with the gear F as seen in Figs. 3 and 4;these spindles are hollow and at their inner ends receive the hardenedjournal pins 5 supported in the hub g and held by the set screws 2" asseen in Fig. 4. This provides a means of adjustment to take up play andwear. The spindles at their outer ends are supported in the outer edgeof the drill head as seen in Fig. i and are longitudinally slotted asseen at I and within the spindle is the shank of the drill or boringtool J which is adjustably held therein by means of a set screw jcarried by the sleeve J supported on the spindle as shown clearlyin Fig.4. The outer ends of the drills extend through the periphery of thedrill head and through the V-shaped rib thereon as seen in Figs. 3 and4t.

WVith the parts thus constructed and arranged the operation will beclearly understood and is as follows:-The drills having been adjusted tothe proper length according to the depth of the required hole and thebelt pulley E connected by belt to any suitable source of power so thatthe said pulley will run in the direction of the arrow in Fig. 1 and thehead in the direction of the arrow in the same figure the hand screw (Zis tightened until the motion to pulley E does not turn the head whichwill be when the friction of the journal in the box is equal to theresistance of the drill spindles to turning. The board to be operatedupon is fed in the direction of the arrow bythe usual means; the headhas a traction in the angle of the board which causes it to revolve andas the head revolves and the board is moved along the drills are rotatedby the means hereinbefore described and cut the required holes.

Modifications in detail may be resorted to without departing from thespirit of the invention or sacrificing any of its advantages.

What I claim as new is- 1. A rotatable head carrying a plurality ofindependently rotatable boring tools andhaving its shaft supported in apivotally sup ported hearing, as set forth.

2. A rotatable drill head carried by a pivotall y supported shaft andcarrying a plurality of independently rotatable boring tools heldagainst longitudinal movement in their bearings, as set forth.

3. The combination with means for feeding the material to be acted upon,of a rotatable tool-carrying device mounted on the pivotally supportedshaft to act upon the material while the latter is moved in a horizontalplane angularly to the axis of the head, as set forth.

4. The combination with a continuous feed device,of a rotatable drillhead provided with a rotatable boring tool and mounted to act at anobtuse angle upon the material while the latter is in motion, as setforth.

5. A rotatable drill head carried byapivotally mounted arm and arotatable boring tool carried by said head and held against longitudinalmovement in its bearings, as set forth.

6. The combination with a continuous feeding mechanism, ofa rotatabledrill head carrying independently rotatable boring tools and having itsshaft mounted in a pivotally supported hearing, as set forth.

7. A drill head having its shaft carried by a pivotally su ppoi tedbearing and having spindles mounted therein and carrying pinions andlongitudinally-adjustable boring tools, as set forth.

8. The combination with a continuous feeding m eehanism, of a rotatabledrill head, having its shaft mounted in a pivotally supported bearingtools carried thereby, and means with in the head for giving the toolsarotary motion, as set forth.

9. The combination with the drill head and the gear therein, the shaftof said drill head being supported in a pivotally-supported bearing ofmeans for actuating the gear, and hollow spindles within the headcarrying pinions meshing with the gear and boring tools carried by thesaid spindles.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIS S. SHERMAN. IVitnesses:

R. Srnvnnwoon, E. G. BUSH.

